/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		double d=2.7;
		System.out.println(Math.ceil(d));
 
		double b=45;
		double e=3;
		System.out.println(Math.pow(b, e));
 
		double p=360;
		System.out.println(Math.sqrt(p));
 
		double a=7038;
		double c=-900;
		System.out.println(Math.max(a,c));
	}
}

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